二钠

The effect of additives on the control of crystal size for sodium sulphate is discussed in the paper.

研究结果表明：十二烷基苯磺酸钠的加入增大了硫酸钠结晶过程的界面能，从而抑制自发成核过程的发生，促进晶体的生长，改善晶体的粒度。

Now they possess twenty more series of product including glycyrrhizic acid, ammonium salt, sylvite, sodium salt, glycyrrhetinic acid, derivatives of the glycyrrhetinic acid etc. which are chiefly applied to the pharmaceuticals, food, cosmetic and tobacco industry as material, intermediate, synergistic agent and additive.

现拥有以甘草酸及铵盐、钾盐、钠盐，以及甘草次酸和甘草次酸的各种衍生物等二十多种系列产品，主要用于医药、食品、化妆品、烟草等行业的原料、中间体、增效剂和添加剂。

O-(1-Arylseleno-3-azido)isopropyl-O-2-(N3-tegafur)alkyl thiophosphate (3a～3f) were obtained via nu-cleophilic ring-opening of sodium azide to 2a～2f in dry DMF at room temperature, and their antitumor activities were tested.

以无水N，N-二甲基甲酰胺作溶剂，室温下，叠氮化钠中对2a～2f进行亲核开环，得到O-(1-芳硒基-3-叠氮基)异丙基-O-2-(N3-替加氟)乙基硫代磷酯。

The Compound Disinfectant of Chlorinated Trisodium Phosphate contains adjuvantsphosphorus pentoxide and surfactant. It is white powder containing 3.44％ available chlorine.

氯化磷酸三钠复方消毒剂含辅助成分五氧化二磷与表面活性剂，为白色粉末，含有效氯3.44％。

The mineral trona, a compound of sodium carbonate and bicarbonate, is one naturally occurring alkali. It may be mined or recovered from dry lake bed s.

世界上有少数地方有矿物天然碱，这种矿石为二碳酸三钠，即碳酸钠石，通常蕴藏在干湖底。

The mineral trona, a compound of sodium carbonate and bicarbonate, is one naturally occurring alkali. It may be mined or recovered from dry lake beds.

世界上有少数地方有矿物天然碱，这种矿石为二碳酸三钠，即碳酸钠石，通常蕴藏在干湖底。

The mineral trona, a compound of sodium carbonate and bi carbonate , is one naturally occurring alkali. It may be mined or recovered from dry lake beds.

世界上有少数地方有矿物天然碱，这种矿石为二碳酸三钠，即碳酸钠石，通常蕴藏在干湖底。

The mineral trona, a compound of sodium carbonate and bicarbonate, is one naturally occurring alkali. It may be mined or recover ed from dry lake beds.

世界上有少数地方有矿物天然碱，这种矿石为二碳酸三钠，即碳酸钠石，通常蕴藏在干湖底。

The mine ral trona, a compound of sodium carbonate and bicarbonate, is one naturally occurring alkali. It may be mine d or recovered from dry lake beds.

世界上有少数地方有矿物天然碱，这种矿石为二碳酸三钠，即碳酸钠石，通常蕴藏在干湖底。

Methods To inspect bacterial endltoxin according to the method in addenda of china pharmacopoeia（second part,2000edition）.

目的 建立阿莫西林钠细菌内毒素检查法方法按《中国药典》2000年版二部附录细菌内毒素检查法。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。